Mercury-holder.



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FIG.

IYNVENTORI: 65km WITNESSES:

,4 if 76% w located inside the body of the holder,the parts the usually-employed cap is dispensed with,

. Holders; and I do hereby declare the follow- Darren STATES PATENT FFlCE.

EDMUND D. GILBERT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE S. S. WVHITE DENTAL MANUFACTURING COMPANY, OF SAME PLACE.

HOLDER.

SPECIFICATION forming part of Letters Patent No. 628,933, dated July 18, 1899;

Application filed March 22, 1899.

To all whom, it may concern.-

Be it known that I, EDMUND D. GILBERT, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Improvement in Mercurying to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. I

My invention relates to mercury-holders for the use of dentists and others; and my object is to simplify the construction of said holders and at the same time render them more effieient.

Mercury-holders usuallyconsist of a bottleshaped hollow body provided with a comparatively large neck or mouth, by way of which the holder maybe readily filled with mercury, anozzle which screws in or upon the bod y and provided with asmall opening through which the mercury may be ejected in desired small quantity by shaking the holder, and a cap detaehably fitted upon the nozzle for preventing the escape of mercury when the cap is screwed in place. .The cap is objectionable because of the time required to remove and replace it and also because of its liability to be lost or misplaced when detached from the holder. Furthermore, the threaded connections between the body, the nozzle, and the cap are comparatively expensive to make, the holders usually being of hard wood.

My invention consists of a mercury-holder the hollow body of which has a nozzle or plug screwing into its neck or mouth and a valve being so constructed that the opening in the nozzle may be closed or opened by simply turning the nozzle in opposite directions. Thus the construction of the device is simplified and the use of the same is rendered more simple.

Of the many forms in which my invention may be embodied I have deemed it expedient to illustrate and describe only the single example shown in the accompanying drawings, in which- Figure 1 is a view in elevation, and Fig. 2 a central vertical section.

semi No. 710,037. (No model.)

In said drawings, A represen ts'the hollow body of the holder, which is of well-known shape. It is best provided with a flat bottom or base A to enable it to stand upright. The comparatively large mouth or neck A is internally threaded, as at a.

B represents a plug or nozzle, the exter naliy-threaded portion B of which screws into the neck or mouth of the holder. The nozzle is formed with a longitudinal bore or aperture b, which is preferably attenuated at its outer end to the proper diameter to admit of the escape of the proper quantity of mercury when the holder is inverted and shaken for that purpose. The inner end of the nozzle is concaved at b to correspond with the pointed orconed end 0 of a valve C. This valve is shown as consisting of a post C, the lower end of which is fitted in a socket in the center of the bottom of the holder.

By entirely unscrewing the nozzle mercury may be introduced into the holder through the mouth A ,after which the nozzle is screwed in place. \Vhen the nozzle is screwed down tight in the holder, the bore of the nozzle is tightly closed by the valve C and the mercury (indicated at D) is prevented from escaping in whatever position the holder may be. Slightly unscrewing the nozzle moves the same away from the valve, thus leaving the bore of the nozzle open, so that when the holder is properly inverted and shaken the mercury may be ejected as desired.

A mercury-holder constructed in this manner is not only more simple to manufacture, there being fewer parts and less screw-threads, but it is more simple to use, it only being necessary to slightly screw or unscrew the nozzle to close or open the holder, the common detachable cap which is usually employed for this purpose and which is liable to become lost or mislaid being entirely dispensed with. By this construction also the quantity of mercury to be shaken from the holder may be nicely regulated.

It will of course be understood that the body 1 of the holder may be of any suitable or desired size or shape, that the nozzle-section may likewise be of any suitable or desired size, shape, or construction adapted for the purpose intended, and that any form of valve supported in the holder and so arranged as to close and open the bore of the nozzle in the manner described may be used without departing from the principle of my invention. In the embodiment shown and described the post 0, which constitutes the valve, may be loosely connected to the holder, or the same may be made flexible, for the purpose of insuring the proper centering and seating of the valve.

While my invention obviously may be embodied in various forms of holders, I prefer the example herein shown and described because of its extreme simplicity of construction.

I claim as my invention-- A mercury-holder consisting of a hollow body having an internally-threaded mouth or EDMUND 1). GILBERT.

Witnesses:

GEORGE W. GALINDO, EUGENE L. SMITH. 

